Allium

Ornamental Onion

Our selections are embellished versions of the common culinary bulbs. Prospering in a sunny, well drained site, these pest resistant Alliums add flair to the garden, your favorite container, or an arrangement; they are attractive either fresh or dried.

<i>Allium christophii</i>

As the straplike leaves die off, Allium christophii sends up stout stems topped by sculptural blossoms. The spherical heads, an airy array of delicate amethyst stars, span nearly 10 in., and are almost too big and too beautiful to be real. Breathtaking in borders and bouquets, Star of Persia’s fawn-colored seed heads dry perfectly. Plant a drift in a well-drained spot and surround with the leafy, long lasting foliage of Geranium ‘Buxton’s Variety’. This Allium withstands both deer and rodents in our garden.

Blooms June.

Size: 2' 0" high x 8" – 10" wide.

Hardy to zone 4.

<i>Allium</i> ‘Gladiator’

True to its name, ‘Gladiator’ is a crowd pleaser that asserts fantastic giant globes shouldered by tall hefty stems and rugged sword-shaped green basal foliage. Vibrant purple blooms, 4 to 5 in. wide, exuding a sweet yet pungent aroma, are composed of tightset green-eyed florets with a metallic luster.

A hybrid between Allium hollandicum and most likely Allium macleanii, this Allium can be staged throughout a stand of white and yellow Verbascums for spectacular colors and divergent flower forms.

Blooms May – June.

Size: 3' 0" – 4' 0" high x 8" – 12" wide.

Hardy to zone 5.

<i>Allium hollandicum</i> ‘Purple Sensation’

Aptly named, this ornamental Allium creates quite a stir as several hundred petite, deep purple flowers squeeze into one sensational-looking baseball-sized inflorescence. A selection made by Mr. J. Bijl in 1963 to produce a dark, vividly hued flower color, ‘Purple Sensation’ rises on tall beefy bare stems from a low nest of narrow, long twisting leaves that disappear around blooming time. Its strongly defined form can be repeated throughout the perennial border, delivering concentrated violet punches and dynamic counterpoints to softer shapes and hues, while remaining equally delightful when seed heads appear.

Blooms May – June.

Size: 2' 0" – 3' 0" high x 6" – 8" wide.

Hardy to zone 4.

Kudos to Allium expert Mark McDonough for this sensational easily grown cultivar, which recently won the 2018 Perennial Plant of the Year award. Tight set, slightly flattened, slender deep green leaves craft a lustrous compact clump that’s topped with vibrant rosy mauve globes on naked 18 in. scapes. Tantalizing butterflies and other pollinators, the profusion of showy 2 in. wide sterile blooms never reseeds and lends colorful long-lasting accents to bouquets. A supposed A. nutens offspring, vigorous ‘Millenium’ can be situated near the front of a well-drained border, peppered amid the rockery or in a cottage garden, where it resists deer and rabbits.

Blooms July–August

Size: 15" – 20" high x 18" – 22" wide.

Hardy to zone 5.

<i>Allium</i> ‘Mont Blanc’

Impressive, 5 to 6 in. creamy white spheres perch atop brawny, straight, green glistening stems, evoking a snowy mountain’s majestic appeal. The tallest of the white flowering Alliums, this long blooming luminous beauty can be superimposed en masse against a dark backdrop or interplanted amid quantities of purple flowering Alliums. Coveted by gardeners, florists and bees, vigorous ‘Mont Blanc’ yields long strapping leaves persisting ‘til flowering time and is distasteful to those fretful deer.

Blooms May – June.

Size: 3' 0" – 4' 0" high x 8" – 12" wide.

Hardy to zone 4.

<i>Allium schubertii</i>

Evoking the charged energy of a bursting firecracker, some 200 miniature star-styled florets top stiff pedicels, which shoot out in all different lengths from the flower's center. Sponsored by wavy, 1 in. wide straps and thick staunch stems, the fantastic spidery globes—enormous, loosely arranged lilac-pink wonders tailor-made for arrangements—measure at least a foot across and lay claim to their name as the entire ball eventually blows away, scattering seeds.

This uniquely shaped ornamental onion's native home is the mediterranean and central asia, and naturally it relishes a warm sunny niche, and when dormant, a toasty dry spell.

Blooms May – June.

Size: 12" – 18" high x 8" – 10" wide.

Hardy to zone 5.

Narrow curly bluish green leaves fashion a dwarf tightset pinwheel-like rosette that evokes swirling eddies and inspires the cultivar name. Bred by onion enthusiast Mark McDonough, this unique A. senescens var. glaucum selection serves up rounded pastel lavender pink flowers on 6 in. stems. An adaptable drought-tolerant pollinator minion, Allium 'Blue Eddy' wards off deer, favors well-drained crannies, makes a lovely cut flower and can be utilized in the herb garden, amid stone work or along pathways.

Blooms August–September

Size: 8" – 12" high x 8" – 12" wide.

Hardy to zone 4.

<i>Allium sphaerocephalon</i>

Arising from narrow grassy leaves, the tall and upright, slender stems present sumptuous thickset globes in blazon crimson-purple hues. An intriguing bicolor effect is created as green buds slowly open from the bottom up. Prized by bumblebees, the long lasting, 2 in. wide blooms assure a breathtaking summer spectacle en masse with swaths of Echinops ‘Blue Glow’ and Monarda ‘Violet Queen’ interspersed.

Blooms July–August.

Size: 2' 0" – 2-1/2' high x 5" wide.

Hardy to zone 5.

  • Catalog Navigation Menu Top
  • Perennials at Digging Dog Nursery
    • Perennials: Acaena to Anthemis
    • Perennials: Anthriscus to Astrantia
    • Perennials: Baptisia to Cynoglossum
    • Perennials
    • Perennials: Fallopia to Gunnera
    • Perennials: Haloragis to Inula
    • Perennials: Kirengeshoma to Morina
    • Perennials: Nepeta to Pulmonaria
    • Perennials: Rheum to Succisella
    • Perennials: Teucrium to Yucca
  • Ornamental Grasses at Digging Dog Nursery
    • Grasses: Acorus to Deschampsia
    • Grasses: Elymus to Uncinia
  • Shrubs at Digging Dog Nursery
    • Shrubs: Arctostaphylos to Halimiocistus
    • Shrubs: Hebe to Weigela
  • Trees & Vines
  • List by Genus
  • Gift Certificates
  • T-Shirts
  • Gift Cards & Etchings
  • Slideshow
  • Gallery
  • Catalog Navigation Menu Bottom

Latest News

Saturdays at 2 p…MORE

Saturday Strolls & Plant Chats 2018!


Current Staff's Favorite Plant

Current Staff's Favorite Plant

Our featured plant: Achillea 'Hella Glashoff'

Amazing Achilleas, Invigorate your summer plantings!

Amazing Achilleas…. These sturdy, dependable perennials produce small indivdual blooms that populate broad, flat flower heads, lending welcome horizontal elements to any garden bed. Ideal for bouquets, fresh or dried, the long-lasting blossoms range in color from alabaster to soft yellow and gold, as well as terracotta, pink and sassy red. Cut back their flowers in midsummer and enjoy a fall encore! Spicy scented, attractive fern-like green or gray-tinged foliage cloaks their strong straight stems. Slowly spreading and somewhat drought tolerant, Yarrow seem to thrive on neglect. They can handle low soil fertility plus coastal wind and salt spray. Be sure to check out our diverse on-line Achillea selections!

Invigorate your summer plantings.… A few simple maintenance techniques will help plants appear fresh throughout the upcoming dog days of summer. The addition of a chipped bark mulch or well-rotted compost, applied as a top-dressing, not only reduces water requirements, but generally makes it easier for plants to maintain perky looking leaves and vigorous habits. A July or early August trimming of long-blooming perennials, such as Nepetas and most Geraniums ensures myriad flowers that will keep on coming ‘til the first frost. Featured in this newsletter, you’ll find the fabulous plants that caught my eye as Boobah and I took our morning walk through the nursery and adjacent display borders this past week. Hopefully, you’ll have room to ensconce several of them in a well-traveled spot. Happy Digging!

Digging Dog's August 2018 Newsletter Link

For a peek at some past newsletters, please visit the following links:

Digging Dog's Late July 2018 Newsletter Link Digging Dog's July 2018 Newsletter Link Digging Dog's June 2018 Newsletter Link
Digging Dog Nursery Right Border